sis_ds.h revision 126533 
1/* sis_ds.h -- Private header for Direct Rendering Manager -*- linux-c -*-
2 * Created: Mon Jan  4 10:05:05 1999 by sclin@sis.com.tw
3 *
4 * Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
5 * All rights reserved.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the next
15 * paragraph) shall be included in all copies or substantial portions of the
16 * Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
21 * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
22 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
23 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
24 * DEALINGS IN THE SOFTWARE.
25 *
26 * Authors:
27 *    Sung-Ching Lin <sclin@sis.com.tw>
28 *
29 * $FreeBSD: head/sys/dev/drm/sis_ds.h 126533 2004-03-03 08:24:31Z obrien $
30 */
31
32#ifndef __SIS_DS_H__
33#define __SIS_DS_H__
34
35/* Set Data Structure */
36
37#define SET_SIZE 5000
38
39typedef unsigned long ITEM_TYPE;
40
41typedef struct {
42	ITEM_TYPE val;
43	int alloc_next, free_next;
44} list_item_t;
45
46typedef struct {
47	int alloc;
48	int free;
49	int trace;
50	list_item_t list[SET_SIZE];
51} set_t;
52
53set_t *setInit(void);
54int setAdd(set_t *set, ITEM_TYPE item);
55int setDel(set_t *set, ITEM_TYPE item);
56int setFirst(set_t *set, ITEM_TYPE *item);
57int setNext(set_t *set, ITEM_TYPE *item);
58int setDestroy(set_t *set);
59
60/*
61 * GLX Hardware Device Driver common code
62 * Copyright (C) 1999 Keith Whitwell
63 *
64 * Permission is hereby granted, free of charge, to any person obtaining a
65 * copy of this software and associated documentation files (the "Software"),
66 * to deal in the Software without restriction, including without limitation
67 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
68 * and/or sell copies of the Software, and to permit persons to whom the
69 * Software is furnished to do so, subject to the following conditions:
70 *
71 * The above copyright notice and this permission notice shall be included
72 * in all copies or substantial portions of the Software.
73 *
74 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
75 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
76 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
77 * KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
78 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
79 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
80 * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
81 *
82 */
83
84struct mem_block_t {
85	struct mem_block_t *next;
86	struct mem_block_t *heap;
87	int ofs,size;
88	int align;
89	int free:1;
90	int reserved:1;
91};
92typedef struct mem_block_t TMemBlock;
93typedef struct mem_block_t *PMemBlock;
94
95/* a heap is just the first block in a chain */
96typedef struct mem_block_t memHeap_t;
97
98static __inline__ int mmBlockSize(PMemBlock b)
99{
100	return b->size;
101}
102
103static __inline__ int mmOffset(PMemBlock b)
104{
105	return b->ofs;
106}
107
108static __inline__ void mmMarkReserved(PMemBlock b)
109{
110	b->reserved = 1;
111}
112
113/*
114 * input: total size in bytes
115 * return: a heap pointer if OK, NULL if error
116 */
117memHeap_t *mmInit( int ofs, int size );
118
119memHeap_t *mmAddRange( memHeap_t *heap,
120		       int ofs,
121		       int size );
122
123/*
124 * Allocate 'size' bytes with 2^align2 bytes alignment,
125 * restrict the search to free memory after 'startSearch'
126 * depth and back buffers should be in different 4mb banks
127 * to get better page hits if possible
128 * input:	size = size of block
129 *       	align2 = 2^align2 bytes alignment
130 *		startSearch = linear offset from start of heap to begin search
131 * return: pointer to the allocated block, 0 if error
132 */
133PMemBlock mmAllocMem( memHeap_t *heap, int size, int align2, int startSearch );
134
135/*
136 * Returns 1 if the block 'b' is part of the heap 'heap'
137 */
138int mmBlockInHeap( PMemBlock heap, PMemBlock b );
139
140/*
141 * Free block starts at offset
142 * input: pointer to a block
143 * return: 0 if OK, -1 if error
144 */
145int mmFreeMem( PMemBlock b );
146
147/*
148 * Reserve 'size' bytes block start at offset
149 * This is used to prevent allocation of memory already used
150 * by the X server for the front buffer, pixmaps, and cursor
151 * input: size, offset
152 * output: 0 if OK, -1 if error
153 */
154int mmReserveMem( memHeap_t *heap, int offset,int size );
155int mmFreeReserved( memHeap_t *heap, int offset );
156
157/*
158 * destroy MM
159 */
160void mmDestroy( memHeap_t *mmInit );
161
162/* For debuging purpose. */
163void mmDumpMemInfo( memHeap_t *mmInit );
164
165#endif /* __SIS_DS_H__ */
166